The material suitable for use as the superfu00eccie anode active in a cell for the reduction eletrolu00ectica of alumina in alumu00ecnio.

摘要

A material suitable for use as the active anode surface in the electrolytic reduction of alumina to aluminium metal defined by the formula: A1+XB1+ delta CdO4 where A is a divalent cation or a mixture of cations with a relative preference for octahedral coordination, B is a trivalent cation or mixture of cations with a relative preference for tetrahedral coordination, C is a trivalent cations with a relative preference for octahedral coordination or a four-valent cation with a relative preference for octahedral coordination, O is the element oxygen: When C is trivalent x=0, 0.8d1, delta 0.2 and x+d+d is essentially equal to 1. When C is four-valent 0.4x0.6, 0.4d0.6, delta 0.2 and x+d+ delta is essentially equal to 1.